Impact of different types of fertilizers to reduce the population density of the sap sucking pests to bean plants

Document Type : Original Article


1 Plant Protection Research Institute, A. R. C. Dokki, Giza

2 Plant Protection Research Institute, Fayoum Regional. Res. Station


The experiment was laid out in a randomized complete block design with three replicates. The aim of the work is to investigate the effect of different fertilizers on the rates of beans infestation by different piercing sucking pests Tetranychus urticae, T. cucurbitacearum, Bemisia tabaci and Thrips tabaci and on the resulting crop yield.  The fertilizer treatments are Ammonium sulfate, Calcium super phosphate, Potassium sulfate, a mixture of NPK and Micro-elements (Zn, Mn, Fe, Cu, Bo & Mo). Results showed that means of green pods yielded by NPK fertilizer was significantly higher than other fertilizers in the two seasons